Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 4 24.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 04/25/2021   17:25:49   (  78.62,-107.14) 04/25/2021   17:24:40  (  78.59,-107.13)    2.68                69
 04/25/2021   18:16:33   ( -78.61,  60.19) 04/25/2021   18:15:41  ( -78.59,  60.13)    2.46                52
 04/25/2021   19:07:18   (  78.62,-132.52) 04/25/2021   19:06:40  (  78.60,-132.53)    1.31                38
 04/25/2021   19:58:02   ( -78.61,  34.81) 04/25/2021   19:57:41  ( -78.61,  34.73)    2.10                21
 04/25/2021   20:48:47   (  78.62,-157.90) 04/25/2021   20:48:40  (  78.62,-157.93)    0.75                 7
 04/25/2021   21:39:31   ( -78.61,   9.44) 04/25/2021   21:39:41  ( -78.62,   9.32)    2.63                10
 04/25/2021   22:30:16   (  78.62, 176.72) 04/25/2021   22:30:40  (  78.63, 176.66)    1.91                24
 04/25/2021   23:21:01   ( -78.65, -16.18) 04/25/2021   23:21:41  ( -78.63, -16.09)    3.04                40
 04/26/2021   00:11:45   (  78.62, 151.34) 04/26/2021   00:12:40  (  78.65, 151.26)    3.30                55
 04/26/2021   01:02:30   ( -78.65, -41.56) 04/26/2021   01:03:41  ( -78.65, -41.50)    1.69                71